Amazfit T-Rex 3 PRO – here’s why it’s better

The original Amazfit T-Rex 3 (reviewed here) is an excellent piece of sports hardware with several market-leading aspects of performance. For example, its map screen scrolling is near-instant compared to multiple seconds from a $1000 Garmin performing the same task. However, it was let down a little by the much-improved app, but at its super low price tag, most drawbacks can be forgiven.

Amazfit T-Rex 3 Pro

GPS Sports Watch

$399

£399

+other retailers

The price of the T-Rex 3 Pro successor has received a significant bump and might cause pause for thought. Check out some more details on Amazon if you want to buy it. I’ll highlight the new additions below and probably review the watch soon. The old T-Rex 3 Review will give yo a good base understanding of the pros and cons of the watch before these new updates.

Amazfit T-Rex 3 PRO – What’s new?

• New smaller case size option – 44mm is added as an option to the existing 48mm
• The display’s maximum brightness bumped from 2,000 nits to 3,000. Both are very bright. The extra brightness makes the most difference on edge cases on sunny days.
• The lens is now sapphire glass and was previously Gorilla glass. I wasn’t sure which kind of Gorilla glass was previously used; it’s a moot point. Sapphire glass is the hardest and generally the best. It’s unlikely you’ll scratch this in everyday use.
• The bezel is changed from the cheaper steel to a superior titanium alloy. Titanium is light and hard.
• The strap attachment mechanism is upgraded to a Quick Release type. Handy if you have multiple straps to swap for the occasion.
• There’s a new flashlight. A widely liked feature, helpful around the house or when on unlit trails, or finding something in a dark tent.
  • Dual colours
  • Boost mode
  • SOS mode
• A microphone and speaker are added.
  • Bluetooth calls can now be made and received. You’ll need to be connected to your phone for this to work.
• Sports modes are boosted from 170 to 180. I’ve no idea what all 10 new ones are, but one is recreational diving.
• A new BIOCHARGE feature, similar to Garmin’s Body Battery, has been added to give you frequently updated info on how primed or run down you might be.
• New routing features
  • Create a round-trip route,
  • re-route without network,
  • navigate turn-by-turn,
  • tap to select a point,
  • plan point-to-point routes,
  • search nearby points of interest
• Improved maps
  • more terrain details
  • enhanced Map Contrast
  • road network density
• Check-in points and alerts are added
• Battery life is improved. As an indication, the best accuracy GPS mode is now 37 hours!
• Zepp OS is version 5 compared to version 4.5 in the T-Rex3
• Zepp Flow upgraded from version 1 to 2

Amazfit – Fun Facts

Amazfit says they make their own chips and optical sensors. That’s an interesting claim, as some other companies source generic 3rd party modules. It doesn’t matter either way, so long as they work well.

The company also develops their own motion and health algorithms. Other companies license a specific proven algorithm. This adds cost but also ensures the algorithms work.

Unlike Apple Watch, Amazfit’s products and app work on either Android or iOS

No monthly subscriptions are required. Especially useful for those of us with subscription fatigue.

Finally, there’s a famous 100-mile alpine running race called UTMB 2025. It’s very prestigious for those in that sport. Sponsored Amazfit athletes used the T-Rex 3 Pro watch for navigation and race strategy, with Rod Farvard finishing 9th and Rosa Lara Feliu winning!

Amazfit T-Rex 3 Pro – Take Out

This is not a review, and I haven’t used the watch yet. So I can’t really say how good the app improvements are. I suspect the watch is better than the previous version, which was already a fantastic value for money.

However, the new price point only works if the app is better and the new features work well; for example, advanced navigation is hard to get right. Sure, this quality hardware beats most competitors at the same price, but how well do Amatfit’s features and algorithms compare to longstanding market leaders at the same price?

At least Amazfit has tried to design some pretty good-looking watch faces. The same can’t be said of many other leading brands.

Amazfit T-Rex 3 Pro

GPS Sports Watch

$399

£399

+other retailers

 

Last Updated on 11 April 2026 by the5krunner

the5krunner

tfk is the founder and author of the5krunner, an independent endurance sports technology publication. With 20 years of hands-on testing of GPS watches and wearables, and competing in triathlons at an international age-group level, tfk provides in-depth expert analysis of fitness technology for serious athletes and endurance sport competitors.